How to configureOLEDB.
IM Data Access and Reports Users Guide
Some functions, eg DataDirect's ABBGetOPCDA() does not require any login or IM.
The older OLEDB access method (that require "table" aspects to be created first) is described in some other guide, can't remember which right now. Search the product media where most users guides reside. Acrobat Reader can search linear in a tree of folders (with PDF files). You may need to search in older versions.